Rotenone is a hydrophobic organic compound with the excellent insecticidal property. However, its hydrophobicity and the short period of efficacy due to rapid degradation in the presence of UV light and air have limited its application as an insecticide. This study studied the effects of hydrophobic alkyl groups on encapsulation and controlled release of rotenone by amphiphilic chitosan derivatives namely, octyl glycol chitosan (OGC) and lauryl glycol chitosan (LGC) were assessed. The physical and chemical properties of OGC and LGC were characterized using Fourier Transform Infrared (FTIR) Spectrometer, CHNO Elemental Analyzer, UV-Visible Spectrophotometer, Fluorescence Spectrofluorometer, and Differential Scanning Calorimetry (DSC). The efficiency of OGC and LGC to encapsulate for rotenone in its micelles was determined by using a High-Performance Liquid Chromatography (HPLC). FTIR and CHNO elemental analyses confirmed the amphiphilic chitosan derivatives were successfully synthesized.....

263 hits

This study aims to examine the usability of 'Algebraic Lab' as a learning aid in learning Mathematics topic of Algebra for Form Two. The method used is product design and development research by using ADDIE model. The approach of this study is quantitative. A total of 100 Form Two students around Perak were randomly selected for this study. Before the questionnaire was distributed, students were taught how to use the 'Algebraic Lab'. Quantitative data were analyzed descriptively. Based on the mean analysis, the usability of 'Algebraic Lab' as a learning aid is 3.15 which is a moderate level. In conclusion, 'Algebraic Lab' is suitable for use as a learning aid for Algebra topics. The implication of this study shows that the process of teaching and learning in Malaysia through games can increase the understanding and attract students' attention to learn the topic of Algebra. In addition, the 'Algebraic Lab' gives positive impact to students, teachers, schools and the Ministry of.....

1223 hits

This article provides a critical reflection on the participatory approach methodology and the collaborative creation approach used in an advocacy project to sustain the musical heritage of the indigenous Semai community in Malaysia. These approaches were examined through the medium of an advocacy project that aimed to stimulate the interest of Semai youth in traditional music through relevance, engagement, and connection with their current musical interest and skills. The intention of the project was to also co-create new traditional music with the Semai youth through live musical interaction, improvisation and jam sessions with the research team. This article explored the research team?s use of the ?Participatory Action Research? (PAR) method, which involved planning, action, observation, reflection, and revision during the initial stages of our advocacy project. Our findings suggest a narrative style in discussing advocacy processes because they occur in a lateral than the linear or .....

1050 hits

A high concentration of phenol and its derivatives were found in the surface water of the Euphrates River in south Iraq?s Nasiriya city causing its pollution from the wastewater derived from different chemicals. This study includes modification of the TiO2 (anatase) bandgap by doping with platinum atoms using the sol-gel method. The modification would reduce the gap separating energy levels between conduction band CB and valance band VB, which in turn, would facilitate the transfer of excited electrons from VB to CB. Absorption of the energy from incident photons having the same or larger energy than that of the bandgap would promote the formation of the couple (electron-hole). The resulting (e-/h+) couple would act to produce (OH) radicals. OH radicals haze a power with full capacity to destroy organic pollutants in the water that are absorbed on the surface of the photocatalytic TiO2. The structure of prepared TiO2 powders was dulcified using XRD, the particle size and their distribu.....

582 hits

ECCE In-Service Carer Educator Instrument is designed to identify early childhood carer-educators' professional competence level in Malaysia by establishing and substantiating its validity. A comprehensive literature review and interviews with experienced childcare educators were conducted to identify the elements that affect the quality of early childhood education. It was reviewed by two experts, in order to augment the validity of this instrument. In addition, this study involved 2522 carereducators. Principal components analysis revealed six scales observing the early childhood professionalism quality which were knowledge, practices, skills, disposition, career development and career path. Each instrument item covered a component loading range of 0.85 to 0.72. In contrast, the alpha reliability coefficient ranges from 0.91 to 0.96 for every scale. The validity and reliability of the ECCE in-Service Carer-Educators Instrument were verified by the findings of this study. Furthermore,.....

312 hits

A Telemedicine network that uses connectivity and information technology to transmit medical signals such as neurological signals Electroencephalography (EEG) has become a reality for medical services of long distances. In the monitoring of mobile healthcare, these signals need to be compressed for the efficient utilization of bandwidth and the confidentiality of these signals, where compression is a critical tool to solve storage and transmission problems and can then retrieve the original signal (OS) from the compressed signal. The objective of this manuscript is to achieve higher compression gains at a low bit rate while maintaining the integrity of clinical details and also encrypting the signal to keep it private, except for specialists. Thresholding techniques are utilized in the compression stage, the Discrete Wavelet Transform (DWT). Instead, Huffman Encoding (HuFE) is utilized for compression and EEG signal encryption with chaos. This manuscript addresses the encoding of EEG s.....

658 hits

In the plan and development of Intelligent Transportation Systems (ITS), understanding drivers behaviour is considered highly valuable. Reckless driving, incompetent preventive measures, and the reliance on slow and incompetent assistance systems are attributed to the increasing rates of traffic accidents. This survey aims to review and scrutinize the literature related to sensor-based driver behaviour domain and to answer questions that are not covered so far by existing reviews. It covers the factors that are required in improving the understanding of various appropriate characteristics of this domain and outlines the common incentives, open confrontations, and imminent commendations from former researchers. Systematic scanning of the literature, from January 2014 to December 2020, mainly from four main databases, namely, IEEEXplore, ScienceDirect, Scopus and Web of Science to locate highly credible peer-reviewed articles. Amongst the 5,962 articles found, a total of 83 articles are .....

309 hits

Hoja santa (Piper auritum) refers to an important presence in Mexican cuisine. The information of this review article was gathered from several electronic sources such as Scopus, Medline, Scielo, ScienceDirect, SciFinder, Web of Science, Google Scholar and Lilacs. Phytochemical studies have revealed the presence of benzoic acid derivatives, phenylpropanoids and triterpenoids, while the essential oils have shown its richness in safrole, hence it has several activities, such as antioxidant, toxicity, insecticidal, anti-diabetic and cytotoxic properties. This review is expected to draw the attention of medical professionals and the general public towards P. auritum as well as to open the door for detailed research in the future. ? 2021 De Gruyter. All rights reserved...

1125 hits

Context. The interpretations of cardiotocography (CTG) tracings are indeed vital to monitor fetal well-being both during pregnancy and childbirth. Currently, many studies are focusing on feature extraction and CTG classification using computer vision approach in determining the most accurate diagnosis as well as monitoring the fetal well-being during pregnancy. Additionally, a fetal monitoring system would be able to perform detection and precise quantification of fetal heart rate patterns. Objective. This study aimed to perform a systematic review to describe the achievements made by the researchers, summarizing findings that have been found by previous researchers in feature extraction and CTG classification, to determine criteria and evaluation methods to the taxonomies of the proposed literature in the CTG field and to distinguish aspects from relevant research in the field of CTG. Methods. Article search was done systematically using three databases: IEEE Xplore digital library, S.....

509 hits

This research involved a systematic and thematic review of literature of studies involving the use of Augmented Reality (AR) in the educational context. Specifically, the review was performed by searching and identifying relevant and recent articles on several leading online databases, which were published from 2014 to 2020. The review yielded 40 articles that discuss various applications of this novel technology. Based on the analysis of their contents, 15 articles are related to multimedia learning involving augmented reality in primary classroom settings. On the other hand, 25 articles discuss studies involving the use of AR in university settings. In terms of content, 18 articles articulate the applications of AR from the explorative perspective, while another 18 articles elaborate the use of AR books in education. By contrast, only 4 articles highlight the use of game-based AR applications in education. The findings of the content analysis carried out suggest that student learning.....

491 hits